\begin{tabular}{l*{1}{c}} \hline                         &  \multicolumn{1}{c}{Colorado Party Affiliations (log)}   \\                         & (1)    \\
\hline 
1959-1963 $\times$ Avg. Betweenness&     -0.0569   \\
                    &    (0.0599)   \\
1964-1968 $\times$ Avg. Betweenness&     -0.0691   \\
                    &    (0.0415)   \\
1969-1973 $\times$ Avg. Betweenness&      0.0343   \\
                    &    (0.0377)   \\
1974-1978 $\times$ Avg. Betweenness&      0.0599   \\
                    &    (0.0420)   \\
1979-1983 $\times$ Avg. Betweenness&      0.0619   \\
                    &    (0.0476)   \\
1984-1988 $\times$ Avg. Betweenness&      0.0388   \\
                    &    (0.0548)   \\
1994-1998 $\times$ Avg. Betweenness&      0.0359   \\
                    &    (0.0295)   \\
1999-2003 $\times$ Avg. Betweenness&      0.0664   \\
                    &    (0.0399)   \\
 
\hline Observations &         459   \\
$R^2$               &      0.9678   \\
\hline \end{tabular}
